ASTROSAT CZTI

Data Quality Report

Orbit 15340

Creation date: 2024-06-27T17:07:07.074918
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T02_073T01_9000002260_15340cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15340cztM0_level2_quad_clean.evt
Size (bytes)501,978,24093,323,520
Size478.7 MB 89.0 MB
Events in quadrant A3,516,116593,051
Events in quadrant B3,583,324600,172
Events in quadrant C3,743,650586,421
Events in quadrant D3,888,200563,118

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149003
B0150152
C0152352
D0159812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69351442.076424%
B69351562.249459%
C69351171.687094%
D69351251.802451%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9071 6936 2 2 0.02% 0.03%
B 9071 6936 2 2 0.02% 0.03%
C 9071 6936 0 0 0.00% 0.00%
D 9071 6936 17 17 0.19% 0.25%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 2 15509 80.13 909 890 182.4
A 0 226 7974 38.83 909 890 182.4
A 12 194 6773 32.25 909 890 182.4
B 8 3 39162 224.34 899 878 170.7
B 12 111 20515 115.07 899 878 170.7
B 11 111 17984 100.24 899 878 170.7
C 3 233 309549 1528.4 880 884 202.0
C 13 61 6246 26.55 880 884 202.0
C 7 247 3146 11.2 880 884 202.0
D 13 122 491499 2284.23 881 855 214.8
D 2 136 37347 169.89 881 855 214.8
D 2 234 22944 102.84 881 855 214.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter